![Preparing for the upgrade | Administering Jira applications Data Center and Server 9.11 | Atlassian Documentation Preparing for the upgrade | Administering Jira applications Data Center and Server 9.11 | Atlassian Documentation](https://confluence.atlassian.com/adminjiraserver/files/966063325/976169336/1/1566549104802/Screen+Shot+2019-08-23+at+10.31.10.png)
Preparing for the upgrade | Administering Jira applications Data Center and Server 9.11 | Atlassian Documentation
![New Open Source App for Jira Server & Datacenter: Extended Issues in Epic panel – www.MrAddon.com ®: Jira & Confluence Administration Support Blog & Ethereum Dev Blog – [www.MrAddon.blog] ® New Open Source App for Jira Server & Datacenter: Extended Issues in Epic panel – www.MrAddon.com ®: Jira & Confluence Administration Support Blog & Ethereum Dev Blog – [www.MrAddon.blog] ®](https://jirasupport.files.wordpress.com/2021/10/screenshot2.png?w=1400)
New Open Source App for Jira Server & Datacenter: Extended Issues in Epic panel – www.MrAddon.com ®: Jira & Confluence Administration Support Blog & Ethereum Dev Blog – [www.MrAddon.blog] ®
![Upgrading Jira (installer) | Administering Jira applications Data Center and Server 9.11 | Atlassian Documentation Upgrading Jira (installer) | Administering Jira applications Data Center and Server 9.11 | Atlassian Documentation](https://confluence.atlassian.com/adminjiraserver/files/970264390/970264391/1/1557300634145/pulpscreen.png)